Gas-control attachment for packers



P. H. MACK GAS CONTROL ATTACHMENT FOR PACKERS March'24, 1925. 1,530,782

Filed Jan. 29, 1924 INVENTOR m MW 7' tin -inpipe, and may be 'used toset the A in which:

l' of 1 the control head, particularly.

nectingv portion, adapted to screw onto the byother means atthe Patented Mar. 24,

r 1.530.182; UNITI-.15 sTATi-:s PATl-:NrI oFsicE, -Q

@Tarek H.' MACK, 4or BRADFORD, PENNSYLVANIA, AssIGNon. To oIL WELL SUPPLY `vCO1Yl' `PA.1\TY, 0F PITTSBURGH, PENNSYLVANIA,

A CORPORATION OF PENNSYLVANIA.

' GAs-coNTRoL ATTACHMENT 'ron P Acxrms.

Application led January, 2 9, 1924. Serial 689,305.

To all cohom tf/nay concern.'

Be it -known that I, 'PATRIGK MACK, a

citizen of the United States, residing at,

Bradford, `in the county oi McKean and 5 State of Pennsylvania, 'have invented certain new and `useful Improvements in a Goas- Con'tr'ol Attachment for' Packers, of whieh the following is a specification.

f This ninvention-is for a combinationlet- 10 ting-in tool and control head for oil or gas Well packers.

` In 4the pumping of oil wells, gas accumulatesin-the hole below the' packer. Amertain .amount of pressure is desirable as it aids the pump valves to operate to better'. advantage. .An excessof pressure must. be

`avoided-however, or the pumpwill not'op- -erate e'iiciently. Consequently, it is desirable to provide means-operable at will for controlling the gas pressure. f

The present iinvention proposes to-provide a "combined letting-in tool and control head applicable to present 'forms of packers. This device, when applied to a packer,secures the packer to. the well tubing, including the -let- `pacer in the usual'way. lThe attachment I Vhas relatively movable parts, -by means of.

which the opening and closing of por-ts may be eifected for lettino' the gas escape or 'forl preventing itsescape.-

My ,invention may be readily understood reference tothe accompanying drawings,

invention is applied to an -ordinary, packer; Fig. 2 isa similar-view, showing the ports closed; i Fig.- 3 is a transverse section in thefplane of line IIIe-IIIof Fig. 1; and i Fig. 4 isaJ transversesection in the plans line IV-IV of Fig. 1. Ji' In the drawings, 5 .designatesl the body of t e lower contop'ofa standard packer `A,.in"pl ace ofthe usual upper member, and which may be f turned -to expand the packingV B-by being screwed down on the body of the packer, although the packing B is'generally expanded bottom of the=A body,

vupper end o bSection 17 is preferably and illustrating the manner in which =-the rangement is that the without turning member 5. The connection has a neck portion 6 ofi less diameter than the main partof the body, andin the in-y wardly sloping shoulder 7j, betweenV the wide bottom parts and reduced neck, are a plurallty ofl ports 8. These -p'orts are made as large as possible to offer a minimum resist-^ ance to the flow" of gas,

the connecting webs Sfbetween the ports being as narrow as possible, consistent with strengt In the neck6, are longitudinally extendwV grooves 9. Slidably telescopinging slots or over the neck or extension 6 is a valve member 10 having a tapered lower end part 11 adapted to cooperate with the inwardly slopingtop of the connector4 5. 'i

as sing throughthe valve member 10, a

little above' its lowermost end,are 'radial 'pins or screws 12, whoseinner ends project vinto grooves 9, providing a spline, by means of' which the valve and connector are slidably but non-rotatably joined. The sliding movement of the sleeveor valve 10 in an 11pward direction is limited by contact with the upper ends of slots`9, as' shown in-Fig. 1,

'these slots terminating below the upper end 12 are provided with\ which prevent theA screws l' turned -into binding engagement of the neck. Screws enlarged heads 12, from bein with the s ots. 2

At the upperend of the sleeve'.l or valve member 10 is'v a reduced joint portion, inte- Lriorly threaded at 13, to engage a letting-in pipe 14;. The upper partof the member 10 also interiorlfy threaded at 15, tofreceive the section17 a short section, carryina coupling sleeve 18 at its lower end, to -w of the well tubingich the upper end 19 ofv the ne'xt sectin of tubing. 1s connected..

One of the chief advantages of this ar- 1in 1 upper end of the 4cou. P g S eevel 18 m'ay be brought against the -lowerend of the neck portion 6 when the packer is being lowered or being pulled, asl Vshown in Fi l 1,'relieving pins 12 from all or partl oft cir work in 'limiting the upprovidingv asafety'check against the parts shear. v

'ioo

.ward movement of the valve member, and

. 105 A Vcompressionspring-:20'may vbe interyposed betweerrthe upper end of tubular ex-,

sleeve 10,- thespring surrounding the tube section 17. Thisl spring functions to urge the' valve or sleeve member 10 upwardly. lts principal advantages is in serving to hold the valve open when the packer is bevinglet linto the well, tending to overcome any tendency of the valve toclose, due to the packer becoming momentarily hungor caught in the well, or due to the tendency of'the valve, which is otherwise held open by gravity, from closing because of any slight friction there may be between 'the' packer and the sides of the well, and. be-

The weight `of the packer, which is free to .slide up and d'own with respect to the valve member, normally tends tokeep the. parts in, the position shown in Fig. 1. The spring 2() also tends to hold` the parts in this posi tion. The ports 8, being of the greatest possible size, allow a maximum of the fluids rising in the well to escape therethrough, .so as to oifer a minimum resistance to the set` ting of )the packer in a wellwhich has a lowered 'to the desired point, tube 14 may be heavy flow.

Vhen the packer, which, for instance, may be ofthe common hook-wall type,- has been rotated to set the p acker in the usual-way,

t'his'rotative movement being transmitted to' the packer through the pin and slot connection. If desired, the attachment'mightA be turned again, after the packer has been set, 1o screw it down on threads a, on the-packer, thereby compressing the-.rubber from the top.

By' reason of the large port area ofthe attachment, the packer and attachment,

'when lowered as a unit into a welLfwith the `valve open, offers a minilnuln'resistance to the upward flow of fluid in' the well. This highly important in the packing off of high pressure wells where considerable diiii 'cultyy has heretofore been encountered in lowering a packer 'against the upwardly flowing Huid'. It alsoprovidesa simple control forl the, escape of gas after the packer is set, and is very useful where gaseous wells are being" pumped, as it enables" the desired pressure to be maintained in the wellfor the bestaction of the pump valves.

Fronrtheforegoing, it will be readily -understood. that. theinvention may be applied to standard packers without modification of their construction. Various changes and modifications may be' made in the con-v .limiting the upward sliding 'the valve.

6. A gas control 'attachment for packers comprising a head 'membeiihaving a'central struction and arrangement of parts in the present invention within the contemplation of my invention and under the scope of the appended claims.

The present construction is designed to be used for the same purpose as the construction shown in my copending application. filed July 18, 1924, Serial No. 689,307,

' I claim as my invention:

-1. The combination with a hollow well packer, of a head having a gas escape port therein, a valve member carried by the head and movable relatively thereto for opening and closing said port, and tubing extending through the packer and connected withthe valve member.

2. The combination with af'hollow well packer', of a head thereon having a gas escape port therein and having a valve seat,

a valve member4 telescopingly fitted over a part of the head and having a valve portion for cooperation with the seat, and means for slidably and non-rotatably connecting the valve member and head.

3. The combination with a hollow welll -packer having a packing element thereon, of

a head screwed onto the packer and arranged to compress the packer when being turned in one' direction, said head having a. restricted neck-portion andv a valve seatand a gas outlet port, a valve member. slidablc .over they neck havingl a valve -portion adapted to cover saidport and engage against saidseat, and means for slidably' and non-rotatably 'connecting the valve and head. y

Il. The combination with 'a hollow well packerhavinga packing element thereon,

of a head screwed onto the upper end o f the packer, said head having an upper part of decreased' diameter anda shoulder having a port therein between said upper part and the main'body ofthe head, a valve member telescoping over said 4upper part having means thereon adapted. to sea-t on the shoulderto close'the' port, and means'for slidably connecting the valve member and the head.,

-5Q A for packers comprisinga head adapted to be secured on i the `-packer, said head having upper and lower parts, the upper part being of less diameter than the lower one, a shoulder between the 4upper and lower parts having a port therein, a `tube slidably passed scoping the'upper` part of said. head and non-rotatable with respect thereto, and. cooperating means on the valve and body for movement of extension of reduced diameter, gas escape gas pressure regulating attachment through the upper partof the head, a valve member screwed to the top of the tube teleextension and 4having means thereon for closing said'ports, means provlding a vsliding non-rotating connectlon between the eX- tension and -valve member, a well tubing passed through the central extension connected at its upper end to theivalvemember, and means on the valve member to which a letting-in tube may be connected.

7. A gas' control attachment for packers comprising a head member having a ycentral extensionof `reduced diameter, gas escape ports4 in the head around tle central extension, a valve member slidably engaging the extension and having means thereon for closing said ports, means providing a sliding non-rotating connection between the extension and valve member, a well tubing passed through thecentral extension connected at its upper end to the valve member, means onthe' valve member to which a letting-in tube may be connected, and a compression spring inside the valve member around the well tubing inte-rposed'between the upper end of said central extensionand the top of the valve member, 'i

8. A gas control attachment for packers comprising a--head member having a central extension of 4reduced diameter, gas escape ports in the head' around the central exten sion, a valve member slidably engaging the extension and having meansthereon -or closing said ports, means providing a sliding non-rotatingconnection between the ex'- tension and va ve member. a well tubing passed 'through the centraly extension connected at its lupper'end to the valvemember', means' on' said well tubing'below said extension arranged" to engagethe under side of said head'member to 'limit the upward movement of said 'valve member with respect to the head,` and means on the valve ture.

member to which a letting-in tube may be connected.

ers comprisingpan interiorly threaded head member adapted to, screw on the top ot apacker, a hollow central extension carried .by the head,` gas escape' ports iu the headaround the central extension, said-central.

'extension having a longitudinally extending 1slot therein, a valve sleeve, Ii-tted over the extension and having a valve portion for cooperation .with the ports in thel head, a

pin on said valve sleeve 'engaging in'the slot to slidably and non-rotatably connect the. valve sleeve and head,'a well tube section connected with the valve sleeve passing through said extension, and means on the sleeve-valve member for connection with a letting-in tubing, v l0. gas -control attachment for well packers comprising. 'an interiorly f threaded head member adapted to screw on the top of a 4packer a vhollow central extension carried by the head, gas escape ports in the head around the vcentral extension, sa-id central extension having a'longitudinallv extending slot therein, a valve sleeve fitted over the -extension and having a valve portion for cooperation with the ports in the head, a piu on said valve-sleeve engaging in the slotto slidably .and lnon-rotatably connect the valve sleeveand head, a well tube section connected with the valve sleeve passing -through said extension, a joint 'member on .said section of well tubing below said head adapted to contact therewith to limit the relative upward movement 'of said section of' tubing with respect to the head, and

means on the sleeve valve memben for con. nection with a lettlng-ln tubing.

`In testimony whereof` I atlix my si-gna- PATRICK iranien.

. 45 i 9. A gas control attachment for well pack- 

